InChI=1S/C31H28O13/c1-40-23-10-16(5-8-20(23)34)30-24(13-19-21(35)11-18(33)12-22(19)42-30)43-31-29(39)28(38)27(37)25(44-31)14-41-26(36)9-4-15-2-6-17(32)7-3-15/h2-13,25,27-29,31,37-39H,14H2,1H3,(H3-,32,33,34,35,36)/p+1/t25-,27-,28+,29-,31?/m1/s1